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Finding the Fourth Proportional to 590,421.80, 885,851.40 and 235,690.40

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Solution

The fourth proportional to 590,421.80, 885,851.40 and 235,690.40 is: 353,622.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,421.80 : 885,851.40 = 235,690.40 : x
  2. Step 2: Convert to fraction form
    590,421.80/885,851.40 = 235,690.40/x
  3. Step 3: Cross multiply
    590,421.80x = 885,851.40 × 235,690.40
  4. Step 4: Simplify right side
    590,421.80x = 208,786,670,806.56
  5. Step 5: Solve for x
    x = 208,786,670,806.56/590,421.80
  6. Step 6: Final answer
    x = 353,622.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.